Architectures – Automatic fault location IM400 and XD312

IM400: Insulation Monitoring Device

- injects combination of low frequency voltages

- displays global R and C

- Alarm + prealarm thresholds.

XD312 are detectors, used with an IM400 PIM module, to have an automatic location of the fault on the network (connected to toroids on the circuits being monitored). Upto 12 feeders monitored per XD312.

Fig. Architectures – Automatic fault location IM400 and XD312

Refer Fig‐1 

How to 

connect 

Refer Fig‐2 

how to 

connect 

Manual fault locating 

kit for downstream 

distribution. 

Fig 1. Connect your IM400

Customer supply 100A, DC 48V, 

CU Busbar (10kA for 1 sec) 

Fig.2 Connect your XD312

For details refer installation guide for IM400 and XD312.

Please Note: Product replacement may not be an exact one-for-one match. Please review the product literature and application.